USS Chaka Zulu was, in the year 2296, the name of a non-existent Federation starship.
History and specifics[]
Starfleet Commander Nyota Uhura of the USS Intrepid II instructed Lieutenant Duchamps to hail the Chaka Zulu by name, on a frequency that would be overheard by a nearby cloaked Romulan warbird. (TOS novel: Vulcan's Forge)